BFL13 wrote:
OP, you are really mixed up as to "Bulk" meaning. Or "Boost" for that matter.
The converter can do its 55 amps or a bit more like 60ish, at 13.6v. That is not the "Boost" you are looking for. Your batteries need to "gas" to get fully charged and " gassing voltage" is 14.x, not 13.6 even close.
What you want is to get that 60 amps at 14.x volts. To get that with a "real" 55 amp charger, you would need to connect it to the batteries with about 3 ft (one way distance--both wires being 3 ft) of #4 wire. There is no way on Earth you can get near that with 15ft of thinner wire!!!! Not even with a "real" charger.
OK, so what to do. IMO, keep the existing WFCO as your converter when on shore power. It runs everything just fine at 13.6v. and it will float a charged battery just fine too.
BUT for battery charging to full and for doing 50-90s off-grid with a generator you need a separate charger that is a real one, that will get those batts done up as soon as possible. You can buy a converter and make it a portable charger you clamp onto the battery posts and plug it into the gen (or the rig if it has a built in gen making the 120v)
I like these things and use them myself, but you can modify any brand converter with wire clamps in its terminals. This one is a bit more expensive because it has the adjustable voltage feature, which is very worthwhile. Don't worry about the 75 amps on the two or three 24s. They will love it if low, or else just will not take that many if at a higher SOC starting the recharge. --The batts protect themselves as needed.
http://www.boatandrvaccessories.com/products/powermax-pmbc-75adj-converter
If I went that route I would just get an IOTA that does 14.7 bulk and 14.2 absorp and put in the passthrough with 4 ft # 2 cable. And plug the gen into that for charging...
http://www.iotaengineering.com/dlsx.htm
